javascript/ex06.html at master · sangmin0816/javascript · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>사용자 정의 함수</title>
</head>
<body>
    <script>
        function fnc1(){
            document.write("매개변수X 리턴X"+"<br>");
        }
        function fnc2(x){
            document.write("매개변수O 리턴X "+x+"<br>");
        }
        function fnc3(){
            document.write("매개변수X 리턴O"+"<br>");
            return "매개변수X 리턴O";
        }
        function fnc4(x){
            document.write("매개변수O 리턴O "+x+"<br>");
            return "매개변수O 리턴O";
        }
        fnc1()
        fnc2(2)
        var var3 = fnc3();
        var var4 = fnc4(4);
        console.log(var3+" "+var4)

    </script>
</body>
</html>